[PATCH 02/12] drm/amd/display: Adjust AUX-less ALPM setting

Roman.Li at amd.com Roman.Li at amd.com
Wed Jul 30 18:58:53 UTC 2025


From: Duncan Ma <Duncan.Ma at amd.com>

[Why & How]
Change ACDS period to support LTTPR.

Reviewed-by: Charlene Liu <charlene.liu at amd.com>
Signed-off-by: Duncan Ma <Duncan.Ma at amd.com>
Signed-off-by: Roman Li <roman.li at amd.com>
---
 .../drm/amd/display/dc/link/protocols/link_edp_panel_control.c  | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/drivers/gpu/drm/amd/display/dc/link/protocols/link_edp_panel_control.c b/drivers/gpu/drm/amd/display/dc/link/protocols/link_edp_panel_control.c
index be714cbf6615..2c3e2945124a 100644
--- a/drivers/gpu/drm/amd/display/dc/link/protocols/link_edp_panel_control.c
+++ b/drivers/gpu/drm/amd/display/dc/link/protocols/link_edp_panel_control.c
@@ -1046,7 +1046,7 @@ bool edp_setup_replay(struct dc_link *link, const struct dc_stream_state *stream
 
 		if (link->replay_settings.config.alpm_mode == DC_ALPM_AUXLESS) {
 			alpm_config.bits.ALPM_MODE_SEL = 1;
-			alpm_config.bits.ACDS_PERIOD_DURATION = 1;
+			alpm_config.bits.ACDS_PERIOD_DURATION = 0;
 		}
 
 		dm_helpers_dp_write_dpcd(
-- 
2.34.1



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